Imperial stout is a strong, dark beer known for its rich flavors and high alcohol content, typically ranging from 8% to 12% ABV. It originated in England and was originally brewed for export to the Russian Empire, hence the name "imperial." The beer is characterized by its deep, roasted malt flavors, often featuring notes of chocolate, coffee, and dark fruits. This style of stout is usually thicker and creamier than regular stouts, with a full-bodied mouthfeel. Many brewers also experiment with additional ingredients, such as vanilla, bourbon, or spices, to create unique variations. Imperial stouts are often enjoyed in smaller servings due to their intensity and complexity.